Lock.



Vf. J. ARRoLL.

APLIOATION FlLED MAY 25, 1906.

103,838. Patented Nov. 17, 1908.

2 SHEETS-SHEET 2.

UNITED sTATEs rares-r errno/E.

WILLIAM I' CARROLL, oF NEW HAVEN, coNNEo'ricUrr, AssieNon'rofjsAEeENfr a coMiANY,

or NEW HAVEN, CONNECTICUT, A coEPonArioN or Colvin;o'riorrr.`

LUCK.

Specification of Letters Patent. i?ateiraed.ifcjvu..v 177,119Q8'.

Application led May 25, 1906. Serial No. 318,733. fl

To all 'whom 'it may concern:

Be it known that I, WILLIAM J CARROLL,

ing the invention, i a 2, a similar view of' the upper portion of t e lock, with the latch bolt shown locked in its retracted*- osition, Fig. 3, a similar view with the latch ljiolt and key bolt shown protracted,'Fig. 4, a similar view of the lock, with the latch bolt and key bolt shown retracted, Fig. 5, a reverse view ofthe tparte shown in Fig. 2, and Fig. 6, a detaileview of thelocking dog.

In all lign y re resent like parts. Y A

f his invention relates to locks, and 'more particularly' to locks for use on doors of stores, and similar places, wherein a thumb piece is rovided to operate the latch bolt.

' The o ject of the invention is the producing the latchbolt in 1ts retracted position, so

that the latch bolt may be held retracted dur* ing business hours', and the door may be opened without the necessity ot operating the latch bolt by the thumb piece. When, however, the key bolt is protractfd the latch bolt is released from engagement by the lock-- iiig dog, so that it will be protracted by its spring. v.

To this, and other ends, the invention consists of the improvements and combinations of arts set forth and claimed hereinafter.

eerrin to the drawings for` a more particular escription of the invention, the parts designated by the letter A represent the casing of the lock, and B its face plate, throu h which are adapted to project the latch olt C and ke bolt D. The latch bolt connected to a stud l at its Arear is pivota 1y Ona lever F,pivotally mounted on a post in the casing.

AspringI-I engages the lever andthe casing' to normally hold the lever in the position shown in Figs. 1 and 3, wherein the latch bolt is shown protracted. An actuating bar I is adaptedto be en aged on its under edge J by a thumb piece` not shown), and when res,vsimilar letters of reference tion of alock having novel means for lockstop U, and this engagement will the bar I is forced upward, as shown in Fig.

il, its upper end will engage a `dep'ending stud K on the under side of thelever F (F ig. 5) to rotate the iever Fhgainst the' tension 'of the spring H and retractthe latchbolt. A flat spring L is shownv'bear'n'rg up'oiitheVV actuilijing haar to hold itf in its'` lower'position 1g.l.' x f The key bolt l) is providedwith a tumbler M of any desired construction, and the key bolt and tumbler are adapted to be Operated by the bit N of a cylinder lock O (Figs. 3 and 41i), in usual manner.

Pivoted to al dependingstud P on the under side of the lieybolt'l) (Fig. 5) is a dog R, one end of which S projects into the of rotation of the bit N fof the cylinder ook "O when the key bolt D is in "its retracted vpath v position (Figs. l, 2, '1i and 5). The do R p is provided with a finger T and shou der or stop U on the under side of the nger. When the' dog is swung by the bit N of the cylinder lock O into the position shown in Figs. 2 and 5, the finger T willen'gage Aa depending stud V on the under side of the lever `F (Fig. 5) and-rotate the lefver'. to retract the latch bolt.' When the latchbolt is thus retracted, and thepressure of the bit N on the dog R released, the spring H will v ytend tc turn the lever F to protract the latch bolt, but the stud V .will abut against the actas a toggle to prevent the rotation of the dosiA lt `on its pivot P, and the lever F on its pivot G. In this way, when' the key bolt is retracted, by the rotation of vthe. bit of the cylinder lock from the position shown in Fig. l tothat shown`in`l"ig. 2, the latch bolt C is retracted and is'l1eld in its retracted position. This may be' done uponthe Opening of the store, or otherbuilding-or business in the morning, andthe latchbolt will remain retracted, sol that the Vdoor maythen be opened. during business hours without the necessity of using the thumb piece and actuating bar l.

Whenthe key bolt D is protracted by the bit N of the cylinder lock O, as the dog R is mounted thereon itis carried forward into the osition showi'rin Fig. 3.,-andithe stud V is disengaged. troni `the stop U, so that the 'lever F may be rotated by the action of the spring H to protract the latch bolt.v Thus the locking of the door. at night, o at other times, will release the latch boit, that. it

post X in the casin engages the depen ino' stud V on theunder prevents the rotation,

will be protracted. Furthermore, the dog R is also provided -with a projcctionW which when the key bolt is protracted (as shown in Fig. 3) bears on its under side against a and on the opposite side side of the lever Fand of the lever. lFand the retraction of the latch bolt .when the Vkeybolt D is thus protracted.

Thus the latch'bolt is locked agamst lretraction when the key bolt is protracted. Whenthe bit N of the cylinder lock .O is

rotated to engagev the tumbler M and key bolt D to retract it (Fi 3), it doesgnot come in contact with the en AS of the dog R, as the dog has been moved 'forward out ofthe path of the bit. Hence. the bit 4N will re- I tract the key bolt'without operating the dog R to retract the latch bolt, but after the key bolt is retracted, further rotation ofthe bit N lwill operate the dog R to retract the latch bolt,- as above described. v

When the key bolt is retracted, the latch bolt may be Aretracted by the actuatin bar I,

-lock said latch bolt in its retracted as shown in Fig. .4, Without the stu V engaging the stop U of the dog R,'because a spring- Y on the dog R engages, as shown more particularly in Fig. 5, the key bolt to hold the dog normally in the position shown in Fig. l, so that the finger is held away from the stud V. Upon the rotation of the leverF by the actuating bar I, the stud V bears on the upper side of the projection "Wl of the dog R, but the finger T and stop U are held away from it by the spring Y.

Having novv 4described my invention (which may vvary in its details Without departing from the spirit thereof), What I claim and desire to secure by Letters Patent, 1s:-

1. In a lock, the combination With a case; of a latch bolt movable in said ca se and .'yieldingly held in its protracted position;

means4 for retracting said llatch bolt; and 'mechanism' operated by a key adaptedv to engage said latch boltretracting means to position, substantially as described.

. 2. In a lock, the combination with va case;

of a latch bolt movable in said case; a key bolt also'movable in said case; pivoted mechanism 'for locking said latch bolt in its retracted position released upon theprotra' tion of said key bolt; and means for operating said latch locking mechanism substantially as described.- V

3. In a lock, the combination with a case;

of a latch bolt movable in said case.; a key bolt also movable in said case; pivoted mechanism for locking said latch bolt its retracted position released upon the protraction of said key bolt, substantially as described.

' 4. In a lock, the combination with a case;

-of a latch bolt movable in said. case; a key bolt alsomovable in said case.; pivoted-mech-v anism for lockingsaid latch bolt in. its retrictedposition when said key'bolt is in its retracted position; and means for operating said latch locking mechanism, substantially as described.I .f y,

5.- In a'lock, the combination with a case;

vof a latch bolt movable in said case; a key bolt also movablein said case; and-mechanism pivotally mounted on said key bolt forv locking said'latch bolt in its retracted position, substantially 'as described..

6. In a lock, the combination with a case; of a latch bolt movable in said case; 'a key boltalso movable. in said case; separate ivoted mechanism for locking said latch lt in its re'traczted position operatedby the ke of said key bolt, substantially as describe 7. In a lock, the combination with a case;-

of a latch bolt movable said case; means for retract-ing said latch bolt; a cylinder lock in said case; a lever operated by'said cyl1nder lock and adapted to engage said' latch bolt retracting means to lockV said latch bolt in its retracted position, substantially as described.

8. In a lock, the combination with a case; of a latch bolt movable in said case; a key --bolt also movable in said case; a cylinder engage said -latch retracting means upon the protraction of said key bolt to prevent its operation, substantially as described.

l0.' In a lock, the combination With a case;

lof a la ch bolt movable in saidcase; a key blt also movable in said'.case; and a lever adapted tp be operated by thekey of said key bolt when in its retracted position to lock said latch bolt in its retracted position,

andcarried free from the operation'by said key When said key bolt'is protracted, substantially a'sdesc'ribed. -Y

1l. In a lock, the combination Witha case; of a latch bolt movable in said case; a key bolt also movable in said case; and a lever ulcrumed on .said key bolt, and adapted to 4 be operated the'key of said key bolt when.'

in. its retractedpo'sition to lock said latch bolt infits'retractedposition and upon the protraction .of'fsaid key -bolt adapted tolock said latch bolt in its protracted position, substantially as described.

12.1In-a'lock, the combination With a case;

of alatch bolt-movable in said case; a lever for retracting said latch bolt pivotally' boasa mounted on said case; and pi'voted meehanand means for o ratin said lever indeism operated by a keg adapted to engage pendent of said ey, su antially as desaid lever to hold sai Vlatch bolt in its rescribed. I tracted4 position, substantially as described;

s 1a. Ina lock, the combination with a me; my hand on the 24th day of May, 1906. of-a. latch bolt movable in said'case; `o. lever 'for retreating said latch `bolt pivotally -WILLIAM J CARROLL'- mounted on said case; mechanism operated Witn:

by a' ke adapted to engagesaid lever to WM. A. Rien,

'RUTH E. Samar.

1:0 holdsai latch bolt in its retracted position;

In witness whereof "I have hereunto set l 

